#include <iostream>

#include "config.h"

#ifdef USE_FEATURE_X
#include "a.hpp"
#else
#include "b.hpp"
#endif

using namespace std;

int main(int argc, char** argv) {
  cout << "hello world" << endl;

#ifdef USE_FEATURE_X
  cout << "a.hpp" << endl;
#else
  cout << "b.hpp" << endl;
#endif
  my_printf();

  if (USE_FEATURE_Y == 1) {
    cout << " USE_FEATURE_Y == 1 " << endl;
  } else {
    cout << " USE_FEATURE_Y == 0 " << endl;
  }


  return 0;
}
